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Shanghai Ruiyuan Filter Equipment Co., Ltd

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Email: 1203556126@qq.com

Website: robertstower.com

Address: 1990 Jinbi Road, Fengxian District, Shanghai

How to improve bag filter media and reduce pressure loss

2019-06-13
second

Modern jet pulse Bag filter Structural characteristics of
The feed gas is ideally transported to the filter bag in a cross flow manner to prevent upward flow and particle sedimentation. The raw gas is guided through the distribution plate, and the pre separation is carried out at the distribution plate, and the raw material air flow in the filter shell is uniform. The deposition of particles occurs on the surface of the filter medium or on the surface of the filter cake deposited on it. The corresponding flow resistance is caused by the filter cake DP FK after jet pulse cleaning and the pressure loss of filter medium (residual pressure loss DP 0)). The cleaned gas flows upward out of the hose. In particular, it is also important to have a long hose (e.g., a hose length of 8 meters, a pipe diameter of 160 mm) and a high filter surface load, which is the pressure loss at the bottom of the pipe, that is, the outlet of the inlet nozzle on the pipe entering the clean gas area. This and all other flow resistances of the filter housing (feed gas inlet to the surface of the filter cake, clean gas flow from the hose outlet to the outlet clean gas pipe) are summarized in the shell pressure loss DP G. After cleaning the filter bag, the dust particles precipitate into the dust collection chamber, which is usually transported away by screw conveyor and rotary valve. In online mode, the particles in the feed gas chamber are continuously filtered. After the jet pulse cleaning, the particle concentration near the filter bag is very high. In this state, especially for fine dispersed dust with oligomerization tendency, the re filtration of cleaned particles will occur. This "internal" dust cycle results in a considerable proportion of cake mass, resulting in pressure loss. In order to improve energy efficiency, the filter module is therefore offset by the original and / or clean gas shut-off device during cleaning without flow. In this so-called off-line mode (half off line, only the cleaning gas side chamber is stopped), the dust is prevented from accumulating on the adjacent filter bags immediately. As a further advantage, cleaning can be carried out by compressed air pulses which are much less intense than traditional jet pulse filters. The current off-line bag filter system has a modular structure and a volume flow range of 50000 M. in this so-called off-line mode (semi offline, only the clean gas side chamber is stopped), the dust is prevented from accumulating on the adjacent filter bags immediately. The advantage of the pulse compression filter is much lower than that of the conventional pulse compression filter. The current off-line bag filter system has a modular structure and a volume flow range of 50000 M. in this so-called off-line mode (semi offline, only the clean gas side chamber is stopped), the dust is prevented from accumulating on the adjacent filter bags immediately. As a further advantage, cleaning can be carried out by compressed air pulses which are much less intense than traditional jet pulse filters. The current off-line bag filter system has a modular structure, and the volume flow rate ranges from 50000 m3 / h IB to more than 2 million m3 / h AC off. The modern off-line jet pulse filter has flow optimization components, such as flow optimization CFD design of wall flush raw material flap and air flow in filter.
 Bag filter

Improved bag filter media to reduce pressure loss
The pressure loss of the filter media and attached filter cake is a large share of the energy cost of operating the filtration system to date. Recent developments aim to reduce the residual pressure loss DP 0. However, there is a very high residual pressure loss due to the very small pore size of the membrane and irreversible dust deposits in the membrane. Traditional needle webs and microfiber needle nonwovens have small residual pressure loss contrast on them, however, there is a high slope of pressure loss curve after cleaning directly, so that it is achieved at the end of the periodic ePTFE membrane pressure level. A pilot scale validation experiment (filter system with 10 hoses, d = 160 mm, l = 4000 mm) showed that the differential pressure level of Protex compared with the commercially available filter media (conventional needle nonwovens and card clothing with microfiber admixtures) can be halved. Because the pore size of the membrane is very small and there are irreversible dust deposits in the membrane. Traditional needle webs and microfiber needle nonwovens have small residual pressure loss contrast on them, however, there is a high slope of pressure loss curve after cleaning directly, so that it is achieved at the end of the periodic ePTFE membrane pressure level. A pilot scale validation experiment (filter system with 10 hoses, d = 160 mm, l = 4000 mm) showed that the differential pressure level of Protex compared with the commercially available filter media (conventional needle nonwovens and card clothing with microfiber admixtures) can be halved. Because the pore size of the membrane is very small and there are irreversible dust deposits in the membrane. Traditional needle webs and microfiber needle nonwovens have small residual pressure loss contrast on them, however, there is a high slope of pressure loss curve after cleaning directly, so that it is achieved at the end of the periodic ePTFE membrane pressure level. A pilot scale validation experiment (10 hoses in the filter system, d = 160 mm, l = 4000 mm) shows that the differential pressure level of Ruiyuan can be reduced by half compared with the filter media sold today (conventional needle nonwoven fabrics and card clothing with microfiber admixtures). However, they have a slope of the high pressure drop curve immediately after cleaning, so at the end of the cycle, they reach approximately the pressure level of the ePTFE membrane. A pilot scale validation experiment (filter system with 10 hoses, d = 160 mm, l = 4000 mm) showed that the differential pressure level of Protex compared with the commercially available filter media today (conventional needle nonwovens and card clothing with microfiber admixtures) can be halved (Fig. 3). However, they have a slope of the high pressure drop curve immediately after cleaning, so at the end of the cycle, they reach approximately the pressure level of the ePTFE membrane. In the pilot scale validation experiment (filter system 10 hoses, d = 160 mm, l = 4000 Compared with the conventional gas filter media, the pressure difference between the air filter tube and the gas filter tube can be further reduced by adding a low pressure difference between the conventional and the gas filter media

 Bag filter

In short, when choosing bag filter, we must know its characteristics and structure in advance, so that we can buy good filter products. Welcome to contact Ruiyuan filter manufacturer for consultation and purchase 1

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Service hotline: 15317806279

Email: 1203556126@qq.com

Address: 1990 Jinbi Road, Fengxian District, Shanghai

南昌附近想过夜电话联系

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